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| author |   Helge Deller <deller@gmx.de> | 2013-06-05 20:50:01 +0000 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2013-06-18 20:20:21 +0200 |
| commit | 91ea8207168793b365322be3c90a4ee9e8b03ed4 (patch) | |
| tree | 8eb6ded7dbdb9a0ea93ed223f51339e49e8426ad /arch/parisc/include/asm/mmzone.h | |
| parent | Merge tag 'please-pull-fixia64' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux (diff) | |
| download | linux-dev-91ea8207168793b365322be3c90a4ee9e8b03ed4.tar.xz linux-dev-91ea8207168793b365322be3c90a4ee9e8b03ed4.zip | |
parisc: fix kernel BUG at arch/parisc/include/asm/mmzone.h:50 (part 2)
Make sure that we really return -1 (instead of 0x00ff) as node id for
page frame numbers which are not physically available.
This finally fixes the kernel panic when running
cat /proc/kpageflags /proc/kpagecount.
Theoretically this patch now limits the number of physical memory ranges
to 127 instead of 254, but currently we have MAX_PHYSMEM_RANGES
hardcoded to 8 which is sufficient for all existing parisc machines.
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc/include/asm/mmzone.h')
| -rw-r--r-- | arch/parisc/include/asm/mmzone.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/parisc/include/asm/mmzone.h b/arch/parisc/include/asm/mmzone.h index cc50d33b7b88..b6b34a0987e7 100644 --- a/arch/parisc/include/asm/mmzone.h +++ b/arch/parisc/include/asm/mmzone.h @@ -27,7 +27,7 @@ extern struct node_map_data node_data[]; #define PFNNID_SHIFT (30 - PAGE_SHIFT) #define PFNNID_MAP_MAX 512 /* support 512GB */ -extern unsigned char pfnnid_map[PFNNID_MAP_MAX]; +extern signed char pfnnid_map[PFNNID_MAP_MAX]; #ifndef CONFIG_64BIT #define pfn_is_io(pfn) ((pfn & (0xf0000000UL >> PAGE_SHIFT)) == (0xf0000000UL >> PAGE_SHIFT)) @@ -46,7 +46,7 @@ static inline int pfn_to_nid(unsigned long pfn) i = pfn >> PFNNID_SHIFT; BUG_ON(i >= ARRAY_SIZE(pfnnid_map)); - return (int)pfnnid_map[i]; + return pfnnid_map[i]; } static inline int pfn_valid(int pfn) |